Smallware loom



y 23, 1940- w. MATTERSON 2,209,278

' SMALLWARE LOOM Filed April 4, 1939 5 Sheets-Sheet 1 1 I r wentm;

Attorney,

July 23, 1940. vy MATTERSON 2.209278 SMALLWARE LOOM Filed Ap ril' 4,1939 5 Sheets-Sheet 2 Attorney,

1 3 1 40- w. MATTERSON 2,209,278

' SMALLWARE LOON Filed A ril 4, 1939 5 Sheets-Sheet 3 Att0rney y23,1940- w. MATTERSON 2,209,278

SKALLWARE LOOM Filed April 4, 1939 5 Sheets-Sheet 4 A ttorn e y,

July 23, 1940. w. MATTERSON SMALLWARE LOOM Filed April 4, 1939 5Sheets-Sheet 5 In ventor Attorney Patented July 23, 1940 UNITED STATESPATENT OFFICE Application April 4, 1939, Serial No. 265,975

In Great Britain April 5, 1938 14 Claims.

This invention relates to smallware looms such as are employed toproduce ribbons and elastic webs. Looms of this type are adapted forsimultaneously weaving a number of webs side by side l and include abatten along which the shuttles are reciprocated by rack and pinionmechanism.

The invention, moreover, has reference particularly to a shuttle motionwhich excludes straps and comprises a part or member, e. g. a roller,

10" which is formed or provided on a suitable part of,

on or connected with the rack or racks and adapted for engagement withcam means having a cam formation designed to impart the desiredreciprocatory motion to the shuttles and 3 driven in suitable timedrelation with the parts of the loom.

The object of the present invention is to provide in a loom of thecharacter concerned a shuttle motion which is of the form just referredto 2& butincorporates improvements designed to make it of a-more simpleand positive character and smoother and quieter in action than motionsheretofore employed. Moreover, the aim is to provide a shuttle motionwhereby the known disadvantages can be eliminated so that the loom canbe readily run at high speeds with consequent increase in output and atthe same time better results.

In the accompanying drawings,

Figure 1 is a front elevational view of so much of a smallware loom asis necessary to illustrate the application thereto of one form of theimproved shuttle motion.

Figures 2 and 3 are rear and side elevational views of the samerespectively.

Figure 4 is a detail transverse sectional view of the batten taken ontheline IVIV of Figure 1.

Figure 5 is a diagram representing the contour of the slot formed in theoscillatory cam lever of the mechanism.

Figure 6 is a view similar to Figure 3 illustrating a modified system oflevers and connections for oscillating the said cam lever.

Figures 7 and 8 are detail rear elevational and plan views respectivelyshowing an alternative manner of associating the cam lever with the rackand pinion mechanism whereby the pause or dwell between shuttle strokescan be readily varied as will be hereinafter described.

Like parts are designated by similar reference characters throughout thedrawings.

In Figures 1, 2 and 3 of the drawings one end of the main frame of theloom is indicated at l, the batten at 2 and 3 and 4 represent a pair ofracks which are disposed parallel to each other and arranged toreciprocate in the batten in the usual way. The existing crank shaft ofthe loom is shown at 5 and the batten 2 is operated from I this shaft bymeans of connecting rods or links such as that indicated at 6 in Figure3. In the example now being described the batten is adapted to swingback and forth, for which purpose it is supported, in known manner, bymeans of upwardly extending arms such as l which at their upper ends arepivotally mounted at the top of the loom so as to be capable of beingoscillated; The racks when reciprocated serve to rotate pinions 8carried by brackets 9 (Figure 1) each of which is adjustably secured tothe front of the batten 2 and provided with a guideway or channel H] toguidea shuttle in its movements back and forth through a shed of warps;the required movements of the shuttles (not shown) areobtained by reasonof the co-operation of the pinions 8 with teeth on the shuttles, all ina manner now well known and familiar to those acquainted with the artconcerned.

The shuttle motion is located at one end of the loom and the two racks 3and 4 are rigidly con-' nected with or attached to a slidable member Hwhich carries at the back thereof a roller 12 adapted to engage in aslotl3 formed in a pivoted cam lever I 4. At its upper and lower edges thisslidable plate or member I I is adapted to engage in and slide alongchannels or grooves 15 formed in the batten. These channels or groovesare formed by appropriately recessing the batten and securing strips Hito the back of the latter in the manner shown more clearly in Figure 4.The strips I6 are so applied and secured in position as, in effect, toconstitute retaining members for maintaining the racks 3 and 4 and theslidable carrier member H in the batten. The said member is mounted soas to work within the confines of a rectangular opening I! provided inthe batten. At one end and at the back of the batten 2 is attached aplate l8, carrying a rearwardly projecting pivot pin I9 upon which thecam lever !4 is mounted. This lever is maintained in position upon thepivot by means of a split pin 20 and has formed at its free end anextension I40. in which the cam slot I3 is provided. The said extension,generally speaking, extends slightly obliquely with respect to theportion I412 of the lever and its shape is determined by the contour ofthe slot l3 therein. Conveniently the slot .member II and racks 3*an'dare at rest. 'If now the cam lever is turned on" its pivot and" moved tosuch'an extent in a downward direction ribs such as 2| and 22 and bossesor protuberances such as 23 and 24- are provided on the pivoted camlever where considered necessary and the latter is designed so as tohave no superfluous portions. The disposition, size and contour of thecam slot I3 may, however, vary widely according to the length of strokeof the shuttles and the speed at which the latter are to operate. Theconstruction so far described is therefore such that when the cam leverI4 is oscillated on its pivot I9, the member I I and hence also theracks f3 and 4 are'reciprocated to operate the shuttles,

by reason of the engagement of the roller I2 in V the slot I3. With acam slot of the representa tive contour shown in Figure the movement ofobviates slam and results in a smooth-motion being obtained. In turn thesmooth motion prevents the-bobbins or quills of the shuttles: fromover-running at the ends of the shuttle strokes. Now, assuming the camlever to be so positioned that the roller I2 is-accommodated within theportion a' of the slot I3 and thereby occupies the full linepositionindicated in Figure 5, then the that the roller becomes locatedin the portion b of the slot and occupies the position indicated at e,then during this movement of the lever, the

member II and the racks will first be caused to move slowly (in adirectiontowards the right of Figure 1) during the time that the portion0" of the-slot passes over the roller, then more quickly by reason ofthepassageover theroller'of the portion 0' of the slot, afterwhich thespeed of movement willdiminish gradually during engagement of the rollerwith the portion c of the slot until the parts are brought torest. Con-jversely, if thecam lever is moved to the same extent in an upwarddirection, the movement of the member I I and the racks will becorrespondingly reversed, that is to .say they "will move in a directionfrom right to left (Figure 1) the move- -ment commencing slowly,increasingfiand then diminishing until thev racks are once again broughtto rest prior ta -subsequent movement 1 from left to right. It willbenoted from a consideration of Figure 5 that the'oscillationof the camlever is such that the ends. of the slot. therein are not at any. timebrought into contact with the roller I2; this is to ensure that slam isprevented. I 1

The cam lever I4 is adapted to be oscillated from the crank shaft 5.. Agear wheel 25 is rigidlysecured to the-appropriatefend, of this shaft,and adapted to mesh with a larger gear wheel 26 which is rotatablymounted inasuitable bearing I 21 provided on the frame of the loom (seemore particularly Figure 3); two gear wheels is 2/1 so that for eachcomplete The ratio between these.

revolution of the crankshaft 5 the gear wheel 26 makes half arevolution. 'The. last mentioned;

gear wheel carries. a crank pin- 28 to which the lower end of a rod orlink 29 is secured. This rod or link serves to connect the crank pin 28with a sliding block 30 adapted to slide between fixed guideways orguides 3I provided in or on the frame I. The guides 3! are bolted orotherwise attached to projecting U-shaped portions 32 formed on abracket33 which is bolted to one of the cross members Ia at the top of the loomframe. By slotting the cross member la the bracket 33 can be madeadjustable. The opposite side edges of the block 30 are appropriatelygrooved for engagement with the guides. In turn the sliding block isconnected with the cam lever I4 by means of another rod or link 34.Thus, when the crank shaft 5 rotates, the cam lever is oscillatedthrough the medium of the aforesaid gear wheels, the rods or links 29and 3 4 and the sliding block 33, which latter is common to both rods orlinks. The said block is furnished with a projecting pin or stud 35 uponwhich the upper ends of the connecting rods or links are pivotallymounted and retained in position by a split pin 36 or any other suitablemeans. Similarly, the cam lever is 'providedwith a pin or stud 31 uponwhich the lower end of the rod or link 34 is mounted. The last-mentionedrod or'link is made adjustable, for which purpose it is made in twoportions each having a screw-threaded engagement with an intermediatecoupling member 38 which is adjustable to vary the effective length ofthe rod or link and can be locked in any position to which it isadjusted by means of nuts 39.

An alternative arrangement of driving means for the cam levermoreparticularlysuitable for heavier types of looms will now be describedwith reference to Figure 6. In this arrangement a radially extendingslot 40 is formed in the gear wheel 26, which slot is adapted forreception of a crank pin M carried by a rod or link 42 serving toconnect the said pin with an arm 43. This arm is pivotally mounted at Mon the upper part of the main frame I and extends in a generallyhorizontal direction from the back towards the front of said frame. Thesaid arm is spring-con trolled, e. g. by one or more tension springs 45,and the arrangementis such that as the crank shaft 5 and hence also theinter-meshing gear wheels 25 and 26 revolve, the arm is moved up Thethrow of the pin is varied by adjusting be connected in an adjustablemanner with the pivoted arm 43. The forward end of the arm is connectedwith the cam lever I4 by means of another rod or link 46, so that as thecrank shaft 5 revolves the cam lever is oscillated. The connection ofthe last mentioned rod or link with the arm 43 may, if desired, also beof an adjustable character, in addition. to which the rod or link itselfmay be made adjustable in the manner shown. As willbe understood, byadjusting the crank pin in the manner hereinbefore described the throwthereof is altered with the result that the timing of the pivoted camlever is correspondingly changed to vary the dwell between strokes ofthe shuttles. 7

When a crankfsuch as that indicated at 41) on the crank shaft 5 ishorizontally disposed and projects towards the rear of the loom, thenthe roller I2 should be so disposed in the cam slot I3 Bearing this factin mind it is possible accurately to'trace out thecontour of the camslot before this is actually formed in the lever M, by moving the crankshaft step by step to the extent of one tooth on the gear wheel securedto said shaft and determining the corresponding extent of movement ofthe roller which is necessary to give the desired movement of theshuttles. Some such method of tracing-out the contour of the cam slot isnecessary or desirable because, as willbe appreciated, it is difiicultor impossible to determine the contour theoretically since themovements'and angularities of the various intermediate connections andtheir efiect on the 16 movement of the cam lever have-to be taken intoconsideration. i

In the modified construction shown in Figures 7 and 8, the roller I2,instead of being mounted directly on a part to which the rack or racksof m: the rack and pinion mechanism is or are rigidly secured, ismounted upon a pivoted lever 48in turn connected with the said rackv orracks by means of a link or lever 49. For the sake of convenience onlyone rack is shown in each of Figures 7 and 8, this being indicated bythe reference numeral 3. Rigidly secured to the approproate end of therack is a part 50 which projects up through and works within a slot 5|formed in the batten 2. This part is itself slotted at 52 for receptionof a pivot pin 53 upon which is mounted one end of the link or lever 49.By suitable adjustment of the pin 53 in the slot 52 the point ofconnection of the said link or 'lever with the part can be varied withinlimits. At its opposite end the link or lever is pivotally mounted upona pin or stud 54 whichprojects forwardly of the lever '48 near the upperend thereof and is adjustable within a slot 55 formed in the lever. Theroller 12 engages the cam slot 405* I3 and at its lower end the lever,48 is pivotally mounted upon a bracket 56 which is conveniently screwor otherwise secured to the underside of the batten. The construction issuch that when the cam lever I4 is oscillated, oscillatory est-movementis also imparted to the lever 48by reason of engagement of the rollerthereon with the cam slot I3-which movement is transmitted to the part50, and hencev also to the rack 3, through the medium of the link orlever 49. It 60 is claimed for this arrangement that by appropriateadjustment of one or both of the pivot pins 53 and 54 in the slots 52and 55 respectively, the pause or dwell between shuttle strokes can bereadily varied in a simple manner.

The cam lever embodied in the construction last described may be drivenin either of the ways aforesaid.

An advantage (other than the advantages already mentioned) of theconstructions herein 60" described is that the shuttles can be movedthrough the sheds with a relatively. small crank throw. 1

It will be understood that the inventionis applicable to smallware loomsof all kinds including looms with ordinary battens and looms. with mockspace battens, for making allkinds of narrow-ware such as ribbons,narrow elastic web and like smallware with advantageous results such asincreased speed as compared with looms having shuttle motions includingstraps, absence of slap owing to the elimination of straps, whichincidentally are also affected by atmospheric conditions, elimination ofslamming and the production of a smoother shuttle action.

looms with battens which have rectilinear backward and forward motion asfor instance on slides or in guides as well as to looms with swingingbattens. Moreover, the invention may ad vantageously be applied toneedle looms for the purpose of moving the weft needles back and forththrough the sheds.

What I claim then is:

l. In'a smallware loom, in combination, a'bat ten, a crank shaft fromwhich said batten is operated, gearing driven from said shaft, shuttleswhich are movable'to and fro along the'batten; rack and pinion mechanismfor reciprocating the shuttles, said mechanism comprising at least'onerack which transmits motion to the shuttles through the medium ofpinions, a part associated with said rack and pinion mechanism, a cammember which is 'pivotally mountedupon the batten and formed" with ashaped guideway for reception of said part, and connecting rods foroscillating said cam member, one of said rods being connected with theaforesaid gearing and another with the cam member, for the purposeherein specified. V

2. In a smallware loom, in combination, a batten, a crank shaft fromwhich said batten is opthe aforesaid gearing and at thebther end withv Isaid sliding block, and another connecting rodwhich serves to connectthe cam member with the block whereby said cam member is oscillated toimpart the desired reciprocatory motion to the shuttles.

3. In a smallware loom, in combination, a batten, a crank shaft'fromwhich said batten is operated, gearing driven from said shaft, shuttleswhich are movable to and fro along the batten,

rack and pinion mechanism for reciprocating the shuttles, said mechanismcomprising at least one rack which transmits motion to the shuttlesthrough the medium of pinions, a part associated with said rack andpinion mechanism,a cam member which is pivotally mounted upo n thebatten and formed with a shaped guideway for Y reception of said part, apivoted lever, a com necting rod which is connected atone end with theaforesaid gearing and at the other end with v said pivoted lever, andanother connecting rod which serves to connect the cam memben'with atleast one rack slidable longitudinally of the,

batten and which transmitsfmotio'n to the shut I tles through the mediumof pinions, a part con-l nected to and which is movable with said rack,a cam member which is mounted upon the batten, said cam member beingformed with a shaped guideway for reception of said part and arrangedfor movement first in one direction and then in the opposite direction,and means for operating said camsmember. whereby-thedesiredreciprocatory motion is imparted to the shuttles.

5. In; a smallwareloom; in combination, a batten,;shuttles which aremovableztoand fro along ,5;. said batten, rack and pinion mechanism forreciprocating the shuttles, said mechanism comprising at least one rackslidable longitudinally of the batten and which transmitsmotion to theshuttles through the medium of pinions, a part connected :10; to andwhich is movable with said rack, an oscillatory cam member which ismovably' mounted 5 upon the batten and formed with a shaped guideway forreception of said part, and. means for effecting oscillation of saidcam'member whereby l5.fth desired, reciprocatory motion is imparted tothe shuttles. i i

6. In a smallware loom, in combination, a batten, shuttles which aremovable to and fro along said batten, rack and'pinion mechanism for refttgciprocating the shuttles, said mechanism comprising at least one rackslidable longitudinally of the batten and which transmits motion to theshuttlesthrough the medium of pinions, a part connected to and which ismovable with said rack,

125'2anoscillatory member which is mounted upon the batten and hasformed therein a cam slot for reception ofsaid part, and means foroperating said oscillatory member wherebythe desired reciprocatorymotion is imparted to'the shuttles.

7 A combination according to claim 6, wherein the oscillatory member isin the form of a pivoted lever. 1

8. In a smallware loom, in combination, a batten, shuttles which aremovable to and frov along BBasaid batten, rack and pinion mechanism forreciprocating the shuttles, said mechanism comprising at least one rackslidable longitudinally of the I batten and which transmits motion totheshuttles through the medium of pinions, apart connected member which ismovably. mounted upon the batten, said cam member being formed with ashaped guideway for reception of said part and arranged for movementfirst in one direction and g then in the opposite direction, and meansfor j operating saidcam member whereby the desired 3 1" d. thendiminishes.

reciprocatory motion is imparted to the shuttles,

said-cam'member being designedto impartreciprocatory motion to theshuttles at a variable speed I and to cause said shuttles to. pause ordwell 1 between strokes. 9. A combination according to claim 8,-.where-,

in the cam member is designed to impart motion to the shuttles such thatat each stroke of each of the latter the movement begins slowly,increases 10. In a smallware I batten, a crank shaft fromwhich saidbatten is operated, shuttles which are movable to and fro i along thebatten, rack and pinion mechanism for reciprocating the shuttles, saidmechanismcomprising atleast one rack slidable longitudinally, of

the batten and which transmits motion tothe shuttles through the mediumof pinions, a part connected to and which is movablewith said rack,

a caxnmember which is pivotally mounted upon the. batten and'formed witha shaped guideway for reception'of said part, and means adapted to beoperated from the aforesaid crank shaft for oscil-,

70 ,lating said cam member whereby ,the' desired to and which ismovable-with. said rack, a ,cam.

loom, in combination, a-

zgsoaava reciprocatory-motion is imparted tolth'e shuttles? llpIn asmallware; loom; in combination, a batten, shuttles which saremovable.to and fro alongsaidbatten, rack and pinionmechanism for reciprocatingthe shuttles," said: mechanism comprising at least one rack slidablelongitudinally'of the batten and which transmits motion to the,

shuttles through the medium of'pinions, az-part.

aremovable to and fro along said batten, rack and pinion mechanism forreciprocating the shuttles,

said mechanism comprising racks slidable longi tudinally of the battenand which'transmit motion to theshuttles through the medium of pinions,a part connected to and which is attached to the racks and adapted toslide between the aforesaidguideways in the batten, a roller on saidpart,

a cam member'which is mo-vablymounted on the batten, said member beingformed with a shaped guideway for reception of said roller and arrangedfor movement first in one direction and then in the opposite direction,and means for operating:

said cam member whereby the desired reciprocatory motion is imparted tothe shuttles,

13. In a smallware loom, in combination, a batten,shuttles which aremovable to and fro along said batten, rack and pinion. mechanism forreciprocating the shuttles, said mechanism cornprising at least one rackslidable longitudinally of the batten and which transmitsv motion tothe: shuttles through the medium of pinions, a pivoted lever which isconnected with the rack, a roller on with a shaped guideway forreception of said roller and arranged for' movement first in one meansfor operating said cam member whereby the desired reciprocatory motionis imparted to the shuttles. v

14. In a smallware loom, in combination, a,

batten, shuttles which are movable to and, fro

along said batten, rack andpinion mechanism for;

' said lever, a cam member which is movably mounted on the batten, saidmember being formed i direction and then in the opposite direction, and

reciprocating the shuttles, said mechanism com- 1 prising at least onerack slidable longitudinally of the batten and which transmits motion tothe shuttles through the mediumof pinions, a part I movable withiandsecured to said rack a pivoted lever, a link to which saidlever isconnected in an adjustable manner and which isinturn similarly connectedto the aforesaid part secured to the rack, a roller on said lever, a cammember which is movably mounted onvsaid ,batten, said cam member beingformed with a shaped guideway for receptionof said roller. and arrangedfor movement first'inone direction and then in the opposite direction,and means for operating the cam member whereby the desired reciprocatorymotion" is imparted to the shuttles;

WILLIAM 1 ATTEasoN;

